Simon Cowell Temporary Replacement: Kenan Thompson Joins AGT

Simon Cowell temporary replacement news has arrived as Kenan Thompson joins America’s Got Talent as a guest judge. Thompson will fill Cowell’s seat during the live quarterfinals while Cowell recovers from a recent back procedure.

The change has raised several questions among AGT viewers. Why is Cowell absent? Is Thompson replacing him permanently? When will Cowell return to the judging panel?

For now, NBC has confirmed Thompson for the September 1 episode. He will join Howie Mandel, Sofía Vergara and Mel B on the judging panel. Terry Crews will continue as the show’s host.

The Simon Cowell temporary replacement is only a short-term arrangement. Thompson will not take Cowell’s permanent position. Cowell remains a regular America’s Got Talent judge and is expected to return after his recovery.

Thompson also brings previous AGT experience to the role. He stepped in as a guest judge during Cowell’s absence in 2020. His return gives the show a familiar personality while Cowell takes time to recover.

Simon Cowell Temporary Replacement Has Been Revealed

Kenan Thompson is the Simon Cowell temporary replacement for an upcoming round of America’s Got Talent Season 21. NBC confirmed that the Saturday Night Live veteran will join the judging panel as a guest judge during Round 3 of the live quarterfinals.

Thompson’s appearance comes at an important point in the competition. The live shows give contestants less room for error because their performances move closer to the stage where viewers have a direct say in the results. With Cowell temporarily unavailable, the production needed another recognizable personality who could contribute to the judging panel without changing the show’s overall format.

For viewers searching for a Simon Cowell AGT replacement, the key distinction is that Thompson is not taking over Cowell’s permanent position. His assignment is tied to Cowell’s temporary absence.

That distinction matters because Cowell remains closely associated with America’s Got Talent. His judging style has become one of the show’s defining features, particularly during moments when contestants receive strong criticism or praise from the panel.

Thompson, meanwhile, brings his own experience as a performer, comedian and television personality. His previous connection with AGT also makes his return less unfamiliar than it might initially seem.

Why Is Simon Cowell Missing From AGT?

Simon Cowell is currently away from America’s Got Talent while he recovers from a back procedure. His absence comes during the show’s live quarterfinals, so NBC has brought in a guest judge to keep the competition moving.

Cowell Is Recovering From a Back Procedure

Current reports say Cowell underwent a back procedure and is taking time to recover. However, NBC has not announced a specific episode for his return. That means viewers should avoid treating any particular comeback date as confirmed.

The available information indicates that Cowell’s absence is temporary. No announcement suggests that he plans to leave America’s Got Talent permanently. Kenan Thompson’s guest-judge role also does not change the show’s regular judging lineup.

The timing creates a practical challenge for the production. The live quarterfinals require the judges to evaluate contestants as they compete for places in the next stage. NBC can keep that format intact by adding a guest judge instead of leaving the panel with only three regular members.

Thompson fills that temporary gap while Cowell focuses on his recovery. His presence allows AGT to maintain its four-judge format during the live competition.

For viewers, the most important point is simple: Cowell has not been replaced permanently. Thompson is serving as a guest judge for the announced episode, while Cowell remains part of the regular AGT lineup.

Who Is the Simon Cowell Temporary Replacement?

Kenan Thompson is stepping into Simon Cowell’s seat as a guest judge, but he is already a familiar face to television audiences. The comedian and actor has built a long career across sketch comedy, sitcoms, movies and other television projects.

Thompson is best known for his historic run on Saturday Night Live. He became the show’s longest-serving cast member and developed a reputation for quick comedy and strong live performance skills. Audiences also know him from projects such as Kenan & Kel, Good Burger and Kenan.

His connection with AGT makes the current assignment even more notable. Thompson previously served as a guest judge when Cowell missed part of the show’s 2020 live competition. That experience gives him an understanding of the program’s format and the pressure contestants face during the live rounds.

For Season 21, Thompson will join Howie Mandel, Sofía Vergara and Mel B on the judging panel. His role remains temporary, so viewers should not mistake his appearance for a permanent change.

Thompson’s Career Beyond AGT

Thompson’s career extends far beyond America’s Got Talent. He became a familiar name among younger audiences through Nickelodeon’s Kenan & Kel before expanding into movies, sitcoms and sketch comedy.

His comedy background fits the AGT format well. Judges must react quickly to performances that can range from emotional and dramatic to surprising or humorous. Thompson’s years of live television experience give him plenty of practice handling unpredictable moments.

He also brings a different personality to the panel. Cowell often approaches performances with a direct and highly critical style. Thompson can offer a lighter perspective while still judging contestants on their performances.

However, Thompson does not need to imitate Cowell. His value comes from bringing his own reactions and opinions to the judging table.

His previous AGT appearance also gives NBC an advantage. Thompson already knows the show’s format and has experience sitting behind the judging desk. That familiarity makes his temporary return a natural fit for the live quarterfinals.

For the current Simon Cowell temporary replacement situation, Thompson’s previous connection with the show adds another layer to his return. He is not an unfamiliar celebrity stepping into the competition for the first time. He has already experienced the role and now returns under similar circumstances.

When Will Kenan Thompson Appear On AGT?

Kenan Thompson will appear as Simon Cowell’s temporary replacement during Round 3 of the Season 21 live quarterfinals on Tuesday, September 1, 2026. NBC confirmed his guest-judge appearance as Cowell takes time away from the competition to recover from his back procedure.

The timing is significant because the live quarterfinals represent one of the most important phases of the America’s Got Talent competition. Contestants are no longer simply trying to impress producers during auditions. They are performing in front of a much larger audience while competing for opportunities to advance toward the finals.

What To Expect From Thompson’s Episode

The September 1 episode will feature Thompson alongside Howie Mandel, Sofía Vergara and Mel B, with Terry Crews continuing in his role as host. Current reporting indicates that 11 acts are scheduled to compete during that quarterfinal round.

Thompson’s role is not limited to offering comments. As a guest judge, he participates in the judging process alongside the regular panel, giving contestants another perspective during one of the show’s most consequential stages.

The episode also gives Thompson a chance to return to a format he has already experienced. His previous appearance came under very different circumstances, when Cowell was recovering from the serious back injury he suffered in 2020.

For viewers specifically searching for the Simon Cowell AGT replacement, September 1 is therefore the key date to remember. Thompson’s appearance has been officially confirmed for that episode, while his participation beyond the announced round has not been established.

That distinction is important. Until NBC announces another guest-judge arrangement, viewers should not assume Thompson will remain on the panel for every episode Cowell misses.

Has Kenan Thompson Replaced Simon Cowell Before?

Yes. Thompson has previously filled in for Cowell on America’s Got Talent, making the current arrangement a return rather than his first time taking the judge’s seat.

The earlier appearance happened during the 2020 season after Cowell suffered a serious back injury in an electric-bike accident. Cowell missed part of the live competition while recovering, and Thompson joined the panel as a guest judge.

Thompson’s 2020 AGT Guest-Judge Appearance

Thompson’s previous AGT stint came during a particularly unusual season. Production had already faced major changes because of the COVID-19 pandemic, and Cowell’s accident created another disruption just as the competition entered its live stage.

Rather than permanently altering the judging lineup, the show used guest judges to help cover Cowell’s absence. Thompson was among those brought in during the live rounds.

That history gives the 2026 decision some useful context. NBC is once again using a familiar guest judge while Cowell deals with a temporary medical absence.

There is also an important difference between Thompson’s current assignment and Cowell’s original 2020 absence. Cowell’s 2020 injury followed an accident and required significant surgery and recovery. His current absence stems from a later back procedure related to ongoing issues, according to current reports.

Still, the practical solution is similar: Thompson can step into the panel without becoming Cowell’s permanent successor.

For longtime AGT viewers, his return may even feel familiar. Thompson already knows how the show works, understands the judging format and has experience responding to contestants during the live competition.

What Happens To The AGT Judging Panel Without Cowell?

Simon Cowell’s absence changes the lineup for the live quarterfinals, but it does not fundamentally alter the structure of America’s Got Talent. Kenan Thompson will step into the open seat for the September 1 episode, joining the regular panel of Howie Mandel, Sofía Vergara and Mel B. Terry Crews remains the host.

How The Temporary Panel Will Work

Thompson will evaluate the contestants alongside the three regular judges rather than taking over Cowell’s broader role within the production. That distinction is important because the announcement describes him as a guest judge, not as a new permanent member of the panel.

The timing also gives Thompson a meaningful role. The live quarterfinals are a critical part of the competition, with contestants competing for places in the later stages of Season 21. For the September 1 round, 11 acts are scheduled to perform, and one will receive the Golden Buzzer, sending that act directly to the finals.

Cowell’s absence therefore does not mean AGT is putting the competition on hold. Instead, NBC has chosen a familiar television personality who has already appeared on the program as a guest judge.

That approach also minimizes disruption for viewers. The judging table keeps its familiar three regular members, while Thompson provides the fourth perspective normally supplied by Cowell.

Is Simon Cowell Coming Back To AGT?

Yes, current reporting indicates that Simon Cowell is expected to return to America’s Got Talent after his temporary break. However, the show has not announced an exact return episode, so viewers should be cautious about claims that he will definitely be back for a particular quarterfinal, semifinal or finale.

What We Know About His Expected Return

Cowell stepped away from the NBC competition to undergo a routine back procedure. A representative previously indicated that he would be back in a few weeks, but that timeframe does not establish a specific filming or broadcast date.

The uncertainty matters because AGT continues to move through its live competition while Cowell recovers. After the September 1 quarterfinal episode, another quarterfinal round is scheduled before the semifinals begin. The season then moves toward its two-part finale later in September.

For now, the safest interpretation is that Cowell’s absence remains temporary. Nothing in the current announcement suggests that NBC is searching for a permanent replacement.

That also explains why the Simon Cowell temporary replacement story should not be framed as a casting overhaul. Thompson is covering one announced appearance while Cowell recovers, and the network can make additional decisions based on Cowell’s progress.

Until NBC confirms Cowell’s exact comeback episode, readers should treat the phrase “returning in a few weeks” as the available expectation rather than a guaranteed broadcast date.

Could More AGT Guest Judges Replace Cowell?

Kenan Thompson is the first confirmed guest judge announced for Cowell’s current absence, but his appearance does not necessarily answer what will happen in every episode Cowell misses.

Reports indicate that Cowell could be away for several weeks, creating the possibility that AGT may need additional guest judges as the live competition continues. However, NBC has only officially confirmed Thompson for the September 1 episode at this stage.

The distinction is important for viewers searching for a Simon Cowell AGT replacement. Thompson is confirmed. A larger rotation of replacement judges remains a possibility rather than an established lineup.

Why Another Guest Judge Could Be Needed

The live schedule continues beyond Thompson’s announced appearance. If Cowell has not recovered in time for subsequent rounds, the production could bring in another guest judge or make another temporary arrangement.

That would not necessarily indicate a problem behind the scenes. Guest judges are already part of AGT’s history, and the program has used temporary panelists when regular judges have been unavailable.

The show also has experience handling Cowell’s absence. During the 2020 season, several guest judges helped cover his seat after his serious electric-bike accident. Thompson was among the personalities who participated during that period.

For the current season, however, it is better to separate confirmed information from speculation. Thompson’s September 1 appearance is official. Any names mentioned for later episodes should be treated as unconfirmed unless NBC announces them.

What Does Simon Cowell’s Absence Mean For AGT Season 21?

Cowell’s temporary departure arrives during one of the most important portions of America’s Got Talent Season 21. The show has moved from auditions into the live quarterfinals, where contestants are competing for advancement toward the semifinals and finale.

That makes the timing more significant than a routine episode change. The judges’ reactions can help shape how viewers perceive performances, while the live format puts contestants under greater pressure than the earlier audition stages.

Thompson’s presence also gives the show a chance to maintain continuity without pretending that Cowell’s role has permanently changed. He can bring a fresh perspective to the panel while the existing judges continue providing their established viewpoints.

Why The Temporary Change Matters

Cowell has been part of AGT’s identity for years, so his absence is naturally more noticeable than an ordinary guest-judge appearance. Still, the current arrangement suggests that NBC wants the competition to continue rather than make his recovery part of the show’s central storyline.

Thompson is particularly suited to that approach because he already understands the program. His earlier guest-judge appearance means he does not need to learn the format from scratch, and viewers who remember the 2020 season may recognize the connection.

The September 1 episode therefore represents a temporary adjustment rather than a major change to AGT. Cowell remains the regular judge, Thompson fills in for the announced round, and the competition continues toward its final stages.

As Cowell recovers, the main question is no longer whether AGT can continue without him. It is how many episodes he will miss before returning to the judges’ table.